Create report for opportunities containing no products
I need a report showing me opportunities, which do not have products linked to them. I've already tried different filters as, for example, product name is not equal to name1, name2.. or saying, product amount is less than 1. But in all cases no values are given back.
Does anyone have an idea, what is the best expression and for which field to get the desired values shown?
Cheers!
Vilma